21295984

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{12211}}^1$

素因数の和:12328

約数の個数: 20

約数和(自身を含む): 41642920

約数和(自身を除く): 20346936

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 12211, 24422, 48844, 97688, 195376, 1330999, 2661998, 5323996, 10647992, 21295984]

約数ペア:

[(1, 21295984), (2, 10647992), (4, 5323996), (8, 2661998), (16, 1330999), (109, 195376), (218, 97688), (436, 48844), (872, 24422), (1744, 12211)]